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dport access: Add _DPORT_REG_SET_BIT & _DPORT_REG_CLR_BIT

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Angus Gratton 2017-08-17 14:16:21 +10:00 committed by Angus Gratton
parent dc8c33892e
commit cb31222e8b
2 changed files with 17 additions and 6 deletions
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2
components/esp32/include/esp_dport_access.h
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@ -12,6 +12,8 @@
// See the License for the specific language governing permissions and
// limitations under the License.
#include <sdkconfig.h>
#ifndef _ESP_DPORT_ACCESS_H_
#define _ESP_DPORT_ACCESS_H_

21
components/soc/esp32/include/soc/dport_access.h
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@ -25,14 +25,21 @@ extern "C" {
//Registers Operation {{
//Register read macros with an underscore prefix access DPORT memory directly. In IDF apps, use the non-underscore versions to be SMP-safe.
// The _DPORT_xxx register read macros access DPORT memory directly (as opposed to
// DPORT_REG_READ which applies SMP-safe protections).
//
// Use DPORT_REG_READ versions to be SMP-safe in IDF apps. If you want to
// make a sequence of DPORT reads, use DPORT_STALL_OTHER_CPU_START() macro
// explicitly and then use _DPORT_REG_READ macro while other CPU is stalled.
//
// _DPORT_REG_WRITE & DPORT_REG_WRITE are equivalent.
#define _DPORT_REG_READ(_r) (*(volatile uint32_t *)(_r))
#define _DPORT_REG_WRITE(_r, _v) (*(volatile uint32_t *)(_r)) = (_v)
//write value to register
// Write value to DPORT register (does not require protecting)
#define DPORT_REG_WRITE(_r, _v) _DPORT_REG_WRITE((_r), (_v))
//read value from register
// Read value from register, SMP-safe version.
static inline uint32_t IRAM_ATTR DPORT_REG_READ(uint32_t reg)
{
uint32_t val;
@ -40,7 +47,7 @@ static inline uint32_t IRAM_ATTR DPORT_REG_READ(uint32_t reg)
DPORT_STALL_OTHER_CPU_START();
val = _DPORT_REG_READ(reg);
DPORT_STALL_OTHER_CPU_END();
return val;
}
@ -81,8 +88,10 @@ static inline uint32_t IRAM_ATTR DPORT_REG_READ(uint32_t reg)
#define DPORT_FIELD_TO_VALUE2(_f, _v) (((_v)<<_f##_S) & (_f))
//Register read macros with an underscore prefix access DPORT memory directly. In IDF apps, use the non-underscore versions to be SMP-safe.
#define _DPORT_READ_PERI_REG(addr) (*((volatile uint32_t *)(addr)))
#define _DPORT_WRITE_PERI_REG(addr, val) (*((volatile uint32_t *)(addr))) = (uint32_t)(val)
#define _DPORT_READ_PERI_REG(addr) (*((volatile uint32_t *)(addr)))
#define _DPORT_WRITE_PERI_REG(addr, val) (*((volatile uint32_t *)(addr))) = (uint32_t)(val)
#define _DPORT_REG_SET_BIT(_r, _b) _DPORT_REG_WRITE((_r), (_DPORT_REG_READ(_r)|(_b)))
#define _DPORT_REG_CLR_BIT(_r, _b) _DPORT_REG_WRITE((_r), (_DPORT_REG_READ(_r) & (~(_b))))
//read value from register
static inline uint32_t IRAM_ATTR DPORT_READ_PERI_REG(uint32_t addr)